package model

import (
	"fmt"
	"gorm.io/driver/mysql"
	"gorm.io/gorm"
	"pet-track/config"
	"sync"
)

var DB *gorm.DB
var err error

func Init() {
	var once sync.Once
	var Mysql = config.AppC.Mysql
	// refer https://github.com/go-sql-driver/mysql#dsn-data-source-name for details
	dsn := fmt.Sprintf("%s:%s@tcp(%s:%d)/%s?charset=utf8mb4&parseTime=True&loc=Local",
		Mysql.User,
		Mysql.Password,
		Mysql.Host,
		Mysql.Port,
		Mysql.Database,
	)
	once.Do(func() {
		DB, err = gorm.Open(mysql.Open(dsn), &gorm.Config{})
	})
	
	if err != nil {
		panic(err)
	}
	fmt.Println("数据库连接成功")
	err = DB.AutoMigrate(&User{}, &Pet{})
	if err != nil {
		panic(err)
	}
	fmt.Println("数据库迁移成功")
}
